单相接地故障脉选装置在小电流接地系统中的应用

Application of Pulse Selection Device for Single Phase Grounding Fault in Small Current Grounding System

小电流接地系统具有供电可靠性高、接地电流小等优点。单相接地故障是电网发生几率最高的一种故障,对准确及时选出电路故障提出了较高的要求。随着电力技术的不断发展,小电流接地选线技术也在不断改进和升级,了解现阶段的选线方法,有助于针对电力系统的实际运行情况选择合适的选线方法和设备。介绍了单相接地故障脉选装置在三钢的应用,并进行了相关现场试验。

Small current grounding system has the advantages of high power supply reliability and small grounding current. The single-phase grounding fault is one of the most frequent faults in power grids, which requires accurate and timely selection of circuit faults.With the continuous development of power technology, the line selection technology of small current grounding is also improving and upgrading. Understanding the current line selection method is helpful for choosing the appropriate line selection method and equipment according to the actual operation of the power system. The application of single-phase earth fault pulse selection device in Sansteel was introduced and relevant field tests were carried out.